CVE-2026-59924 Mistune: Arbitrary File Read via Include directive path traversal

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, Include.parse joins and normalizes user-supplied include paths without verifying that the result remains within the intended markdown directory, allowing crafted include paths to access files outside that directory wh...

CVE-2026-59924

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, Include.parse joins and normalizes user-supplied include paths without verifying that the result remains within the intended markdown directory, allowing crafted include paths to access files outside that directory wh...

CVE-2026-59924

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, Include.parse joins and normalizes user-supplied include paths without verifying that the result remains within the intended markdown directory, allowing crafted include paths to access files outside that directory wh...

CVE-2026-59929

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, the safeurl filter in src/mistune/renderers/html.py blocks only javascript:, vbscript:, file:, and data: schemes, allowing legacy or chained schemes such as feed:, view-source:, jar:, livescript:, mocha:, ms-its:, mk:...

CVE-2026-59925

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, long sequences of well-formed double-asterisk or triple-asterisk emphasis pairs around a character cause quadratic work in src/mistune/inlineparser.py because the parser scans forward for matching close markers from...

CVE-2026-59925

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, long sequences of well-formed double-asterisk or triple-asterisk emphasis pairs around a character cause quadratic work in src/mistune/inlineparser.py because the parser scans forward for matching close markers from...

CVE-2026-59926

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, renderadmonition in src/mistune/directives/admonition.py concatenates the Admonition directive :class: option into the HTML class attribute without escaping, allowing attribute injection and cross-site scripting even...

CVE-2026-59923

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, HTMLRenderer.safeurl does not block percent-encoded javascript URIs, allowing attacker-supplied Markdown links or images to bypass URL protections and execute script in rendered HTML. This issue is fixed in version...

CVE-2026-59930

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, the toc plugin and TableOfContents directive generate heading IDs as predictable tocN values without slugifying the heading text, allowing attacker-controlled id="tocN" content to collide with generated anchors and...

CVE-2026-59922

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, a run of closed tilde, equals-sign, or caret marker pairs around a character causes quadratic work in src/mistune/plugins/formatting.py when the strikethrough, mark, or insert plugin scans for matching markers from ea...

CVE-2026-59922

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, a run of closed tilde, equals-sign, or caret marker pairs around a character causes quadratic work in src/mistune/plugins/formatting.py when the strikethrough, mark, or insert plugin scans for matching markers from ea...

CVE-2026-58657

Grav before 2.0.0 affected through 2.0.0-rc.9 and the 2.0 branch contains a stored CSS injection vulnerability in the Markdown image resize media action. Prior media hardening rejects direct ?style= payloads and unsafe attribute fallbacks, but the resize action in Excerpts::processMediaActions...

CVE-2026-58657 Grav - Stored CSS Injection via Markdown Image resize() Action

Grav before 2.0.0 affected through 2.0.0-rc.9 and the 2.0 branch contains a stored CSS injection vulnerability in the Markdown image resize media action. Prior media hardening rejects direct ?style= payloads and unsafe attribute fallbacks, but the resize action in Excerpts::processMediaActions...

CVE-2026-58657 Grav - Stored CSS Injection via Markdown Image resize() Action

Grav before 2.0.0 affected through 2.0.0-rc.9 and the 2.0 branch contains a stored CSS injection vulnerability in the Markdown image resize media action. Prior media hardening rejects direct ?style= payloads and unsafe attribute fallbacks, but the resize action in Excerpts::processMediaActions...

EUVD-2026-42267

Grav before 2.0.0 affected through 2.0.0-rc.9 and the 2.0 branch contains a stored CSS injection vulnerability in the Markdown image resize media action. Prior media hardening rejects direct ?style= payloads and unsafe attribute fallbacks, but the resize action in Excerpts::processMediaActions...

CVE-2026-58657

Grav before 2.0.0 (through 2.0.0-rc.9 and the 2.0 branch) contains a stored CSS injection in the Markdown image resize() action. In Excerpts::processMediaActions(), the resize() path writes caller-controlled values directly into the image’s styleAttributes. A low-priv content editor who can edit ...

CVE-2026-59710

A flaw was found in Showdown. This vulnerability, a stored cross-site scripting XSS issue, allows an attacker to inject malicious code into web pages. By exploiting unescaped table header ID attributes in markdown, an attacker can embed arbitrary HTML and script-executing elements. When untrusted...

PT-2026-56510

Name of the Vulnerable Software and Affected Versions Mistune versions prior to 3.3.0 Description A denial of service issue exists in the default parsing process. Long sequences of well-formed double-asterisk or triple-asterisk emphasis pairs around a character cause quadratic work in...

PT-2026-56508

Name of the Vulnerable Software and Affected Versions Mistune versions prior to 3.3.0 Description A flaw in the Python Markdown parser occurs when the strikethrough, mark, or insert plugins scan for matching markers from each possible start position. Specifically, a sequence of closed tilde,...

PT-2026-56665

Name of the Vulnerable Software and Affected Versions Drupal AI SEO/GEO Analyzer versions 0.0.0 through 1.1.3 Description Stored Cross-site Scripting XSS occurs when the module generates SEO/GEO analysis reports by sending entity content, including comments, to a Large Language Model LLM. The...